Tobacco-smoking pipe



' Nov. 16 1926.

P. A. WEBB TOBACCO SMOKING PIPE Filed June '4. 1926 auoe hto'a 854 W 277mg attomwg (present invention; and

Patented Nov. is, 1926.

ui'ra s rowHA'rAN A. WEBB, or TLANTA, GEORGIA.

TOBACCO-SMOKING IIPE.

Application filed. June 4, 1926. Serial No. 113,789.

the bottom of the bowl, for the purpose of 'cooling the same. V

Another object of the present invention consists in the provision of a pipe, having the main bore of the bowl provided with a fiat bottom and a laterally extending groove, together with passages through the walls of the bowl connecting the groove with the top' surface of the bowl and a valve for regulating the amount of air. passing through thesepassages.

Other and further'objects will be more apparent from a consideration of the following specification and accompanying drawing wherein is disclosed a single exemplary embodiment of the invention with the under standing, however, thatvarious changes may be made therein without departing from the spirit of the invention or the scope of the attached claims.

In said drawing: I 7

Fig 1 is a longitudinal vertical section through a pipe constructed according to the Fig. 2 is a'plan view of the same. The present invention contemplates the provision of a pipe following along the general lines of those in common use and provided with a bowl 10 having an integral stummel .11 formed of wood orother suitable material. The-bowl is provided with the usual tobacco receiving compartment or bore 12 into which leads thesmoke passage 18 in the stummel. This passage 13 is continued at 14 in the bit or stem 15 formed of vulcanite or any of the various materials used for this purpose.

The bottom of the bore 12 is preferably flat as shown at 16, and just above the bot tom and contiguous therewith is thelateral groove 17 extending circumferentially around the bottom of the bore. This groove extends laterally approximately inch and has a vertical depth of about E; inch. Its

I purpose is to provide an annular compartment surrounding the bottom of the bore and into which but little tobacco is received owing to its narrowness. The bore 13 in the stummel enters this groove 17 whereby suction, during the process of smoking, is applied substantially equally around the periphery of the bore of the. bowl to thus cause the tobacco to burn more evenly. It also serves to eliminate hot spotswhich cause excessive heating notonly of the bowl of the pipe'but of the smoke.

A number of smokers are troubled by burning of the tongue from the heat of the smoke passing through the passage 14 in the stem and impinging directly on the tongue. In order to cool the smoke and to some extent dilute the same, means are provided for admitting a regulated quantity of air into the smoke before it passes into the bore of the stummel. These means comprise a plurality of substantially'vertical passages. or bores 18 passing through the walls of the bowl and substantially parallel to the walls of the tobacco compartment. These'passages are so positioned that their lower ends open through the upper wall 19 of the groove 17 and are thus not subject to clogging by tobacco packed in the bowl.

The top of the bowl is preferably flat and the passages 18 open into this flat annular surface and are thus in communication with the atmosphere so that, during the smoking of the pipe, air is drawn through the passages as well as through the tobacco, the smoke and air commingling in the groove 17 before he in'g drawn into the passage 13in the. stummel.. Preferably three passages 18 are provided, spaced as shown in Fig. 2 with one directly opposite the smoke passage 13 and the other two at- 120 intervals therefrom. They are thus sufficiently spaced from the passage 13 to prevent the drawing of substantially pure air through the smoke passa e.

in order to prevent tobacco entering the air passages 18 when'the pipe is belng filled and to provide a gooddraft when lighting the pipe and atother times when desired,

means are provided for closing oflf the upper ends of these passages 18. Such means comprises an annular plate 20 of aluminum or any other suitable metal or material provided with the circumferential slots 21 through which pass the screws 22, the lower ends of which areengaged in the material of the bowl. The screws are provided with enlarged heads 23 or with washers 24 to retain the metal plate 20 in position and yet to allow it to be rotated. lhe desired amount of friction, to hold the plate in any adjusted position, is provided by tightening or loosening the screws. The plate 20 is provided with three apertures positioned so that when the plate is turned to its maximum inv one direction these apertures register with the openings of the air passages 18 to allow the air to pass freely therethrough. At the other extreme position the openings; 25 are out of register with the tops of the air passages and the solid part of the plate completely closes off the same. At intermediate positions varying amounts of air are allowed to pass into the passages in accord ance with the amount that the ends of the same are uncovered by the openings 25.

On filling and lighting the pipe, the passages l8v are preferably closed by the plate 20 but after the tobacco is burning well they are opened to any degree according to the desire of the smoker and the smoke may thus be cooled suficiently to prevent burning of the tongue. The construction of the pipe is such that the tobacco can be burned clear to the bottom, an excellent draft being provided for that purpose by the groove 17. It has been found from experience that the air passing through the passages 18 serves to evaporate moisture in the bottom of the bowl caused by condensation and saliva which runs in through the stem, so that there is no damp or soggy tobacco left at the end of the smoke and all of the tobacco can therefore be consumed. This materially improves the odor of the pipe and of the smoke.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:

1. In a tobacco pipe in combination a bowl and a stummel, said bowl having a tobacco compartment enlarged in diameter at the bottom, said stummel having a smoke passage entering said enlargement of the tobacco compartment, said bowl being provided with a passage substantially parallel to the wall of the tobacco compartment and connecting said enlargement to atmosphere I air passa at the top surface of said bowl and an adjustable valve on said top surface to regulate be brought into and out of registration with said air passage for the purpose described.

In a tobacco pipe, in combination a bowl having a fiat top and a tobacco receiving bore, said bore being provided with a flat bottom and a lateral groove contiguous to said bottom, a stummel having 'a smoke passage leading from said groove, said bowl being provided with'a plurality of air passages leading from said fiat top to said groove, an annulus on said top having slots and holes therein, headed screws passing through said slots into said bowl to rotatively secure said annulus in position,,said holes being adapted to be moved into. and out of registry with said air passages.

4. In a tobacco pipe, in combination a bowl having a fiat top and a tobacco receiving bore, said bore being provided with a flat bottom and a lateral groove contiguous to said bottom, a stummel having a smoke passage leading from said groove, said bowl being provided with 'a plurality of air passages leading from said flat top to said groove, an annulus on said top having slots and holes therein, headed screws passing through said slots into said bowl to rotatively secure said annulus in position, said holes being adapted to he moved into and out of registry with said air passages, said air pas-' sages entering the groove at material distances from the smokevpassage.

signature. i. r POlVHATAN A. WEBB 

